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  Indian J Med Microbiol
 

Figure 6: Category 4, Suspicious for malignancy. (a and b) cytomorphology showing aggregates of atypical cells with low nucleo-cytoplasmic ratio, vesicular chromatin and prominent nucleoli. c-e, cell block immunocytochemistry showing negativity for MOC-31 (c) and calretinin (d) and membranous positivity for D2-40 (e) confirming malignant mesothelioma. f histopathology section from pleural biopsy showing fibrocollagenic tissue with few lymphomononuclear and mesothelial cells (a, Papanicolaou stain; b, May-Grünwald-Giemsa stain; c-e, immunoperoxidase stain;f, Hematoxylin & eosin)

Figure 6: Category 4, Suspicious for malignancy. (a and b) cytomorphology showing aggregates of atypical cells with low nucleo-cytoplasmic ratio, vesicular chromatin and prominent nucleoli. c-e, cell block immunocytochemistry showing negativity for MOC-31 (c) and calretinin (d) and membranous positivity for D2-40 (e) confirming malignant mesothelioma. f histopathology section from pleural biopsy showing fibrocollagenic tissue with few lymphomononuclear and mesothelial cells (a, Papanicolaou stain; b, May-Grünwald-Giemsa stain; c-e, immunoperoxidase stain;f, Hematoxylin & eosin)